Definitions for knee-jerk

This page provides all possible meanings and translations of the word knee-jerk

Random House Webster's College Dictionary

knee′ jerk`(n.)

  1. a reflex extension of the leg resulting from a sharp tap on the patellar tendon.

    Category: Physiology

Origin of knee jerk:



  1. Informal. reacting in an automatic, habitual manner; unthinking:

    a knee-jerk liberal.

    Category: Common Vocabulary

Origin of knee-jerk:



  1. knee-jerk(Noun)

    A sudden reflexive movement of the leg below the knee, as a reaction to a tap to the tendon just below the patella (kneecap).

  2. knee-jerk(Adjective)

    Automatic, spontaneous, easily predictable

    He gave a knee-jerk response.


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